Said after someone tells or asks you to do something that you're too lazy or you just don't want to do. Can be used the same as "fuck that" or "I don't want to" .
Example: Jim: Dude pass me a coke? Bill: Screw that!
Example: Screw you. You're screwed.
That's pretty screwy (fucked up).
Wanna screw?
I can't find a screw...
(... seriously. If you're looking for fucking screws, you're never gonna get laid. So you're desperately looking for a fuck. Cause nails work better... or I just desperately wanted this definition to work. I think screwed this definitions ratings)